1. Not unless you want to reengineer the entire system.

2. I know the MB or Bosch pumps are expensive, but I replaced my 380's pump with a no-name pump. It lasted a grand total of 3,000 miles. A waste of time and money.

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86 560SL
With homebrew first gear start!
85 380SL
Daily Driver Project

http://juliepalooza.8m.com/sl/mercedes.htm